Rotary engine



C. MULINEX.

ROTARY ENGINE. APPLICATION FILED Nov. 4, |918. 1,850, 1 68, PatentedAug. 17, 1920.

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ROTARY ENGINE.

APPLICATION F|LED Nov. 4, 1918.

1,350,168. l' `Panfedfxug.17,1920.

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CHAISE MUL'rNEX, or ToLLEY, NORTH DAKOTA.

ROTARY ENGINE.

Specication of Letters Patent.

imntea Aug. 17, 1920.

` Application filed November 4, 1.9718. Serial No. 261,042.

To allwhom t may concern:

Be it known that I, CHASE MULINEX, a citizenof the United States, and aresident of Tolley, in the county of vRenville `and State of NorthDakota, have invented a new and Improved Rotary Engine, of which thefollowing is a description.

My invention hereinafter vreferred lto as relating to a rotary engine,is adaptedl for embodiment in eithery an engine or a pump and is adaptedtor employ 1Vany suitable motive fluidsuch as steam, air,vor gas.'` -Theinvention more particularlyrelates to a rotary engine employing radiallydisposed slidable pistons.v `Y :i 1 l The general object of theinvention is to provide an engine ofthe indicated type improved invarious particulars Iwith a view to increase the eliciencyofthe engine;to provide for the .automatic sliding of the pistons tothe powerposition and return without producing aside pressure thereon such aswould cause a'binding Vof the pistons in the rotor; and .to .provide aconstructionV of acharacter to prevent leakage between the Vrotor andstator;

Further objects and advantages` of the invention will appear as.the..description proceeds.- u l p v Reference is to be-hadto theaccompanying drawings forming a part `of thisV specification, i-t beingunderstoodV thatjtherdraw-Y ings 'are merely illustrativeof .one exampleof the invention.

-Figurel yis a cross section. ofY an engine constituting 4one embodimentof -my inven- K tion; u y

Fig. 2 is a partly sectional side .elevation thereof; v l v N Fig. 3 isa central longitudinal section of the rotor; Y n Y f Fig. tis .an `edge.view .of one 4of; the pistons; a

Fig. Y5 is .a fragmentary side view of `one of the pistons, parts beingbroken away ,and others in section;

Figa-.6 is a partial side view ofthe-ecceni tric guide wall for thepistons;

Fig. 7y is an inner -ace vievs7 .of oneof the heads of the cylinder orworking chamber.

In carrying out my invention in accordance with the illustrated example,a stator is provided including a novel case 10 within which is arotor 11on a shaft 12,r Said rotor has radially disposed pistonsl slida.` ble inslots 14 and the rotor has at the opposite ends thereof concentricchambers or recesses 15 directly about the shaft 12 to receive a motivefluid Aand communicate with the several slots 14.l -An eccentric guidewall 16 is disposed within the casing 10 between the same and theperiphery of the rotor 11 to be eccentric to both the casing and rotor.The casing 10 and rotor 11 are concentric and the chamber 20 formedtherebetween and in which the guide wall 16 is disposed, is a concentricchamber of equal dimensions'throughout. Said guide wall has slots 17 orequivalent perforations to establish free communication between theinterior and exterior of said guide Wall, so

that notwithstanding the eccentricity of the guide wall 16, there is nounequal pressure at the opposite sides of the pistons.

The pressure in the chambers 15 and slots 14 forces the pistons.outwardly for maintaining said pistons in contact with said guide wall.The power arc through which the pistons 13 move at their maximum radialprojection over the surface of the wall 16 is imper'forate as at 18 anddiametrieally Aopposite said power are is anv imperforatey area 19ioverwhich the pistons move in returning. rlhe areas as at 18 and 19, itwillbe observed, are true arcs, but of different 'radius,.so that thepistons have no radial movement duri-ng the work arc in the moving overthe area 19. T he concentricchanin ber 20 for the motive lfluid has aninlet 21 and an exhaust 22. These extend, in the illustratedexamplefthrougli flanges 23, 211 on the arcuate'plate formingthe returnsurface at 19 for the pistons. Motive fiuid lfrom anysource may besupplied through inlet 21, there being indicated a` pipe 2 5 havingvalves 26, 21 between which valves a branch 28 leads from said pipe V25to .one

ofy the chambers 15, the pressure fluid ythereby reaching the variousslots 14, a valve 26 is provided in the branchv pipe 28.` Provision ismade for packing the rotor 11 at ythe ends, for which purpose'circularpackprevent leakage.

ing strips 29 are provided on the inner face of heads 30 provided inthestator, said strips being pressed outward by springs 31 at theback ofthe same. 'In' order to pack the pistons 13 at the side edges, I providein each side edge a packing strip 32 beneath which are springs 33. VThestrips 32 have a length greater than the maximum stroke of the pistonsto insure an effective packing of a piston at the sides by extendingover the surfaces of theV heads l30 radially outward of outer strip 29and between the latter and the circular guide 16, Vand thereby Inaddition to the packing elements 29, 32, I Vprovide packing strips 34 inthe rotor 11 in the opposite walls of the slots 14, there being springs35 at the lback of said strips 34 to press the same against the oppositeside surfaces of the pistons to prevent leakage of the Vmotive fluidthrough the slots.

By the described arrangement the circular packing elements 29 preventleakage radially outward from a chamber 15 between the rotor 11 and theopposite cylinder heads. The packing elements 32 prevent leakageannularly at the periphery when the pistonsare projected into thechamber 2O and the elements 34 prevent leakage from thel chamber 15,through the slots 14. In starting the engine the valves 26 and 26 areopento supply a motive fluid through the branch 28 to the radjacentchamber 15 and' slots 14, thereby causing the pistons 13 to be subjectedto a pressure tendingto force them radially outward. The valve 27 isthen opened to direct'motive fluid to the chamber 2O through the inlet21, thereby i causing the pressure of the same to act on the pistons toturn the rotoi, the motive Y fluid exhausting at the opposite'si'de ofthe power area through the perforated Vguide wall 16 andY exhaust 22.lith the engine in Ioperation centrifugal force will throw the pistonsradially outward only subject to the guiding action of the wall 1(3,andthe valve V2G may thenl be closed.

I would state in conclusion that while the illustrated exampleconstitutes a practical embodiment of my invention, I do not limitmyself strictly to the mechanical detailsY herein illustrated, sincemanifestly the same can be considerably varied without departure fromthe spirit Vof thel invention in the appended claims.

Having thus described my invention, I claim as new, and desireto secureby Letas defined ters Patent:

1. A rotary engine including a cylindrical casing, a rotor concentric.in the casing and spaced therefrom to providean intervening concentricchamber adapted to receive a mo-` tive fluid, radially disposedpistonscarried by the rotor and slidable therein, a cylindri- -cal guide wallin said chamber and eccentric rotor and casino to the motor and rotor,saidwall presenting l imperforate arcuate areas approximatelydiametrically opposite each other, over which areas the" pistons operate-without radial ber having an inlet and an exhaust for motivefluid'respectively at opposite sidesV of that imperforate area overwhichthe pistons travel in their position of Zero projection. f j Y 2. Arotary engine including a cylindrical casing, a rotor concentric inthe'casing and' spaced therefrom to provide an interveningv Vconcentricchamber adapted to receive-a inotive fluid, radial pistons carried bythe rotor and slidable'therein, an eccentric cylindrical guide wall insaid chamber presenting imperforate areas constituting arcs of circlesdiametrically opposite each other, over which areas the pistonsoperatewitho'ut ra- Adial movement inV their positions of maximum andzeroY projection respectively, the remaining portions 'of said guidewall being 1 perforated sothat the pistons'move'over-the perforated areaof the wall in their for-` ward and return strokes to and from theposition of maximum projection, said chamber having Van inlet and anexhaust forv motivev lluid respectively at opposite sides of. thattravel in their position of'zero projectioni 'imperforate area overwhich Vvthe pistons 3. A rotary engine including a casing,

presenting heads at opposite ends,a rotor concentric Vwith the casingand spaced therefrom to provide an interveningconcentric chamber, saidrotor having depressions i at the ends adjacent to the axis and havingradial slots extending `from said depressions toV said concentricchambeizl'pistons sli'dable in said slots, an inlet and an 'exhaust forY said'chamber, a perforate guide wall in cir-- cular form Yin saidchamber eccentric to the inlet pipe to one of said depressions,'andvalves in said branchpipe and in said fluid l a fluid supplyl pipeVVcon-VV nected -with said inlet, la branch 'from' saidV supply pipebetween said branchV pipe and Y* l said inlet.

4. A rotary engine including` a casing presenting heads at oppositeends, a rotor l concentric with the casing andspaced therefrom toprovide4 an intervening concentric chamber, said rotor having radialslotsfextending to said concentric chamber, pistons slidable in saidslots, an'inlet and anlexhaust for saidchamber, a perfoi'ateguide wallin circular form in said chamberec'centric to the rotor and casing,means to 'supply motive fluid to said chamber and radial slots, andpacking means for the pistons, said packing 'means including annularspring-pressed strips on the heads of the casing at the inner faces andcontacting with the side edges of the pistons radially inward from theouter ends of the latter, spring-pressed packing strips carried by saidpistons at the side edges thereof radially outward from the said strips,land springnp'ressed packing strips on the rotor in the opposite Wallsof the slots and contacting with v'the respective pistons at oppositesides. s

' CHASE MULINEX.

